Key West, FL

Weather Forecast Office

NWS Key West

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Last Map Update: Tue, Oct 20, 2026 at 8:36:12 am EDT

Watches, Warnings & Advisories

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National Weather Service Tampa Bay Area, FL

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High Surf Advisory

Small Craft Advisory

Rip Current Statement

Coastal Flood Statement

Small Craft Advisory

Coastal Flood Statement

Brief Respite In Breezes Mid-Late Week

Island Chain

Marine Winds

Wave Heights

Small Craft Advisory in effect for all of the Florida Keys coastal waters! Hazardous marine conditions present around the Florida Keys with widespread winds of 20-25 knots (~20 knots FL Bay) and seas exceeding 7 feet. Inexperienced mariners, especially those operating small craft should stay in port until conditions improve. Get the latest marine forecast details at weather.gov/key/marine

A Coastal Flood Statement is in effect for the Upper Keys through late tonight. Minor saltwater flooding of low elevation streets & lots is likely. Some storm drains will overflow & some seawalls/docks overtopped. Boaters should expect less clearance under fixed bridges.

A Small Craft Advisory remains in effect for all the Florida Keys coastal waters today. A brief respite to the breezes is anticipated for Wednesday and Thursday before another potential surge in breezes for late week and the weekend. A slight chance of showers for the waters mainly south of the Chain today. Get the latest forecast details at weather.gov/key

TODAY: Mostly sunny with a slight chance of showers. Breezy. Highs in the mid 80s. NE winds 15-20 mph. Chance of rain 10 percent.

A Small Craft Advisory is in effect for all Keys Coastal Waters. TODAY: Fresh to strong NE breezes. Seas: Bay/Gulfside 3-5 ft, ocsnl 6 ft, except W of the Marquesas 5-7 ft, ocsnl 9 ft; Hawk Channel 3-5 ft, ocsnl 6 ft, except W of Cosgrove 5-6 ft, ocsnl 8 ft; FL Straits 6-9 ft, ocsnl 11 ft; SE Gulf 5-7 ft, ocsnl 9 ft. Bay / nearshore waters very rough, except rough FL Bay. A slight chance of showers, except for FL Bay and the Bay/Gulfside waters.

A Small Craft Advisory is in effect for all Keys Coastal Waters. TODAY: Fresh to strong NE breezes. Seas: Bay/Gulfside 3-5 ft, ocsnl 6 ft, except W of the Marquesas 5-7 ft, ocsnl 9 ft; Hawk Channel 3-5 ft, ocsnl 6 ft, except W of Cosgrove 5-6 ft, ocsnl 8 ft; FL Straits 6-9 ft, ocsnl 11 ft; SE Gulf 5-7 ft, ocsnl 9 ft. Bay / nearshore waters very rough, except rough FL Bay. A slight chance of showers, except for FL Bay and the Bay/Gulfside waters.

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Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska

NWS Key West